Trolley-wire support



l 2 Sheets-Sheet 1.

.L. YAKEL. .TROLLBY. WIRE SUPPORT.

No. 524,014. Patented Aug. 7, 1894.

W11 EEEE v MIR g w 0% j W I (No Model.) 2 SheetsSheet 2.

L. Y AKEL. I TROLLEY WIRE SUPPORT.

No. 524,014. Patented Aug. 7, 1894.

UNITED STATES PATENT OFFICE.

LEVI YAKEL, OF ALLEGHENY, PENNSYLVANIA.

TROLLEY-WIRE SUPPORT.

SPECIFICATION forming part of Letters Patent No. 524,014, dated August '7, 1894. Application filed A ril 15, 1893. Renewed December 2'7, 1893. Serial No. 494,858- (No model.)

To all whom it may concern.-

Be it known that I, LEVI YAKEL, a citizen of the 'United States, residing at Allegheny, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Electric Insulators; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it pertains to make and use thesame, reference being had to the accompanying drawings, which form a part of this specification, in which Figure 1 indicates an elevation of my improved insulator for overhead electric condoctors. Fig. 2 is a central section and an elevation of the nut and lower portion of bolt. Fig.3 is a plan of the jaws for holding spanwires. Figs. 4, 5 and 6 are central sections of modifications.

- The object of my invention is to produce not only an efficient insulator, but also one that will be easily adapted to all the requirements of an over-head conductor, and at the same time durable. This I believe I accomplish by the device hereinafter described reference being had to the accompanying drawings forming part hereof in which like letters indicate like parts wherever they occur.

Referring to said drawings a is a ring having a flange b in the interior thereof the lower surface ofwhich is concave, and the upper surface provided with series of indentations or depressions c. Said ring is also provided with a flange d projecting from the top at right angles to its sides, and isprovided with anumber of holes for the reception of bolts e for the purpose of securing the cap 9 the lower end of which is provided with a similar flange h to admit of this. The upper end of said cap terminates in the jaws It for the purpose of gripping the span wirel as shown, one of said jaws is integral with said cap and is provided with a bolt hole for the purpose of securing the other jaw thereto.

m is a threaded bolt whereon series of mica and asbestus disks n are alternately strung whereby the sides, top and bottom of said ring are efiectually insulated from said bolt, the lower end of which carries the convex nut 12 whereby the disks of mica and asbestus are adapted to be secured upon tightly impacted between the lower surface of the head of saidbolt and the upper surface of the flange of the ring and also between the lower surface of said flange and the top of said nut. The asbestus and mica disks are sufficiently large as to permit their being drawn partially over the head of said bolt when the same is tightened by the nut. Shellac is then poured over the head of said bolt, and it may also be poured over the lower end of said insulator and making it impervious to dampness.

If necessary the space between the head of the bolt and top of cap may be filled with asbestus or other insulating material.

I have notthought it necessary to show the manner of attaching the electric conductors with said insulator as any ordinary fin in anyordinary or usual Way attached to the lower end of the bolt will answer.

One of the principal advantages of my insulator is that the projections on the under surface of the head of the bolt fitting tightly in the indentations and the convex nut prevent the boltgouging out the insulating material, the asbestus alternating between the mica also preventing the easy fracture of the latter.

Having described my invention, what I claim, and desire to secure by Letters Patent, 1s'

1. In an electric insulatorthe combination of a bolt, the lower end of which is adapted to be secured to a fin for an electric wire, a se ries of asbestus and mica disks alternately strung thereon, a ring, a cap adapted tobe secured thereto and means of securing said bolt in said ring and cap substantially as described, 1

2. In an electric insulator the combination of a ring having an interior flange, the upper surface of which is provided with indent tions and its lower surface concave, a cap said ring a bolt adapted to be secured within said cap and ring and a series of disks of asbestus and mica interposed between the bolt cap and ring of said insulator substantially as and for the purpose described.

3. In an electric insulator, the combination of a ring having an interior flange; a cap adapted to be secured thereto, and terminat- In testimony that I claim the foregoing I ing in jaws, one blade of which is integral hereunto aflix my signature this 13th day of 10 with said cap and the other secured thereto March, A. D. 1893. b a transverse bolt, a bolt ada ted to be se- 5 c red within said ring and cap and a series LEVI YAKEL' of disks of asbestus and mica interposed be- In presence of---- tween the bolt and the flange of the ring; sub- ALBERT J. WALKER,

stantially as and for the purpose described. H. B. STONE. 

